Monoprice Inc.
Monoprice Inc. 139385 Digital Multimeter Test
Measures voltage, current, resistance and diodes with DC ranges to 300 V, AC to 300 V, current to 10 A and resistance to 2 megohms
- Item Count1
- TypeMultifunction Testers
- FeaturesDC voltage range scales: 300V, 200V, and 20V.
- Measures DC voltage up to 300V across three range scales
- Tests AC voltage at 200V and 300V ranges
- Covers DC current from 200µA to 200mA in four steps
- Checks resistance from 20kΩ to 2MΩ on three scales
- Verifies 1.5V and 9V battery condition directly
Digital multimeter for voltage.
The Monoprice 139385 is a handheld digital multimeter designed to measure DC and AC voltage, DC current, resistance and diodes. It also provides a built-in battery check function for 1.5V and 9V cells. The unit is supplied new and ready for immediate use in electrical troubleshooting tasks. Its manual range scales cover the most common low-voltage measurement needs.
Suitable for hobbyists
This meter suits hobbyists, students and technicians who need a simple instrument for checking household wiring, low-voltage DC circuits and battery condition. It is not intended for users who require true-RMS accuracy, capacitance or frequency measurement, or automatic ranging. Buyers who need higher voltage or current ranges, or who work on mains-powered industrial equipment, should look at a more advanced model.
Key specification: DC voltage scales of 20V.
The three DC voltage range scales of 20V, 200V and 300V define the measurement ceiling for the most common fault-finding tasks. Together with the 10A DC current maximum and the 2 megohm resistance top range, these figures determine whether the meter covers the circuits you plan to test.
Highlights
- Measures DC voltage up to 300V across three range scales
- Tests AC voltage at 200V and 300V ranges
- Covers DC current from 200µA to 200mA in four steps
- Checks resistance from 20kΩ to 2MΩ on three scales
- Verifies 1.5V and 9V battery condition directly
Specifications
| Brand | Monoprice |
|---|---|
| Model | 139385 |
| Part Number | 139385 |
| Item Count | 1 |
| Type | Multifunction Testers |
| Features | DC voltage range scales: 300V, 200V, and 20V. |
Questions about this item
How do I connect the test leads to measure DC voltage up to 300 V on the 139385 multimeter?
Insert the black lead into the COM jack and the red lead into the V/Ω jack, then turn the rotary selector to the 300 V DC range before probing the circuit.
Which user-replaceable batteries does the 139385 require for the built-in 1.5 V and 9 V battery-check function?
The meter uses a standard 9 V battery for its own power; the 1.5 V and 9 V test positions simply apply a load to the external cell you are checking.
What is the highest DC current range the 139385 can measure continuously without overheating?
The maximum DC current range is 10 A; sustained measurements at this level should be kept brief to avoid heating the internal shunt.
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